{"id":3187,"date":"2026-06-24T16:13:03","date_gmt":"2026-06-24T14:13:03","guid":{"rendered":"https:\/\/www.technical-center.de\/wiki\/welding-procedure-qualification-test\/"},"modified":"2026-06-24T16:13:03","modified_gmt":"2026-06-24T14:13:03","slug":"welding-procedure-qualification-test","status":"publish","type":"encyclopedia","link":"https:\/\/www.technical-center.de\/en\/glossary\/welding-procedure-qualification-test\/","title":{"rendered":"Welding Procedure Qualification Test"},"content":{"rendered":"<div class=\"glossar-eintrag\">\n<p><strong>Definition:<\/strong> The <a class=\"tc-inlink\" href=\"\/en\/home\/welding-brazing-soldering\/\">welding<\/a> procedure qualification test is the qualifying proof that a defined welding procedure, under specified parameters, reproducibly achieves the required quality. The result is documented in a welding procedure qualification record (WPQR). The requirements are governed by DIN EN ISO 15614.<\/p>\n<p><strong>Practical relevance:<\/strong> The test comprises welding a test piece under realistic conditions as well as subsequent destructive and non-<a class=\"tc-inlink\" href=\"\/en\/materials-testing-analysis\/destructive-testing-methods\/\">destructive testing<\/a>. Typical tests are the tensile test, bend test, notched-bar impact test, hardness testing and macroscopic examination. The qualified parameters (e.g. current, heat input, material group) define the validity range of the WPS.<\/p>\n<p><strong>Decision-making perspectives:<\/strong><\/p>\n<ul>\n<li><strong>Technical decision-makers:<\/strong> Ensuring the process stability and mechanical performance of the welded joint.<\/li>\n<li><strong>Purchasing\/project management:<\/strong> Requiring valid WPQR documents as a prerequisite for awarding contracts.<\/li>\n<li><strong>Science:<\/strong> Analysis of heat-affected zones, microstructural transformations and residual stresses.<\/li>\n<li><strong>Insurance\/law:<\/strong> Proof of standard-compliant procedure qualification in cases of damage.<\/li>\n<\/ul>\n<p><strong>Typical testing or verification methods:<\/strong> Tensile test, bend test, notched-bar impact test, hardness testing, macroscopic section examination, NDT.<\/p>\n<p><strong>FAQ:<\/strong><\/p>\n<ul>\n<li>What is the difference between WPS and WPQR?<\/li>\n<li>The WPS describes the welding procedure, while the WPQR documents its successfully tested qualification.<\/li>\n<\/ul>\n<\/div>\n","protected":false},"author":0,"featured_media":0,"template":"","encyclopedia-tag":[],"class_list":["post-3187","encyclopedia","type-encyclopedia","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.technical-center.de\/en\/wp-json\/wp\/v2\/encyclopedia\/3187","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.technical-center.de\/en\/wp-json\/wp\/v2\/encyclopedia"}],"about":[{"href":"https:\/\/www.technical-center.de\/en\/wp-json\/wp\/v2\/types\/encyclopedia"}],"wp:attachment":[{"href":"https:\/\/www.technical-center.de\/en\/wp-json\/wp\/v2\/media?parent=3187"}],"wp:term":[{"taxonomy":"encyclopedia-tag","embeddable":true,"href":"https:\/\/www.technical-center.de\/en\/wp-json\/wp\/v2\/encyclopedia-tag?post=3187"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}